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Description of Organization and Business Operations (Details) - USD ($)			9 Months Ended	12 Months Ended
	Nov. 21, 2024	Nov. 04, 2024	Sep. 30, 2025	Dec. 31, 2024	Aug. 13, 2025
Description of Organization and Business Operations [Line Items]
Incorporation date			Jun. 24, 2024
Share price (in Dollars per share)		$ 10
Transaction costs			$ 11,403,592
Cash underwriting fee			2,000,000
Deferred underwriting fee			8,750,000
Other offering costs			653,592
Interest to pay dissolution expenses			100,000
Convertible promissory notes					$ 78,000,000
Common stock purchase price			$ 800,000,000
Preferred Stock, par value per share (in Dollars per share)			$ 0.0001	$ 0.0001
Shares of preferred stock (in Shares)
Rights [Member]
Description of Organization and Business Operations [Line Items]
Number of shares per unit (in Shares)		1
Business Combination Agreement [Member]
Description of Organization and Business Operations [Line Items]
Trust account per public share (in Dollars per share)			$ 10
Business Combination [Member]
Description of Organization and Business Operations [Line Items]
Net balance percentage			80.00%
Percentage of redeem initial business combination		100.00%
Business Combination [Member] \| Rights [Member]
Description of Organization and Business Operations [Line Items]
Number of shares per unit (in Shares)			1
Post-Business Combination [Member]
Description of Organization and Business Operations [Line Items]
Voting interest acquired			50.00%
Class A Ordinary Shares [Member]
Description of Organization and Business Operations [Line Items]
Consummated units (in Shares)	1
Share price (in Dollars per share)		$ 10
Gross proceeds				$ 250,000,000
Number of shares per unit (in Shares)		1
Common stock, par value per share (in Dollars per share)			$ 0.0001	$ 0.0001
Class A Ordinary Shares [Member] \| Business Combination [Member]
Description of Organization and Business Operations [Line Items]
Consummated units (in Shares)	1
Common Stock [Member]
Description of Organization and Business Operations [Line Items]
Common stock, par value per share (in Dollars per share)			$ 0.0001
Series A Cumulative Convertible Preferred Stock [Member]
Description of Organization and Business Operations [Line Items]
Percentage of number of shares			12.00%
Series A Cumulative Convertible Preferred Stock [Member] \| New Merlin Labs [Member]
Description of Organization and Business Operations [Line Items]
Percentage of number of shares			12.00%
Series A Preferred Stock [Member]
Description of Organization and Business Operations [Line Items]
Preferred Stock, par value per share (in Dollars per share)			$ 12
Shares of preferred stock (in Shares)			4,901,961
Series A Preferred Stock Investment [Member]
Description of Organization and Business Operations [Line Items]
Aggregate purchase price			$ 50,000,000
Initial Public Offering [Member]
Description of Organization and Business Operations [Line Items]
Share price (in Dollars per share)		$ 10
Gross proceeds		$ 250,000,000
Initial Public Offering [Member] \| Rights [Member]
Description of Organization and Business Operations [Line Items]
Number of shares per unit (in Shares)		1
Initial Public Offering [Member] \| Class A Ordinary Shares [Member]
Description of Organization and Business Operations [Line Items]
Consummated units (in Shares)		25,000,000
Share price (in Dollars per share)		$ 10
Gross proceeds		$ 250,000,000
Number of shares per unit (in Shares)		1
Private Placement [Member]
Description of Organization and Business Operations [Line Items]
Consummated units (in Shares)			425,000
Sale of stock units (in Shares)		425,000
Price of per share (in Dollars per share)		$ 10
Sale of private placement units		$ 4,250,000	$ 4,250,000
Private Placement [Member] \| Rights [Member]
Description of Organization and Business Operations [Line Items]
Number of shares per unit (in Shares)		1
Private Placement [Member] \| Class A Ordinary Shares [Member]
Description of Organization and Business Operations [Line Items]
Number of shares per unit (in Shares)		1
Public Share [Member]
Description of Organization and Business Operations [Line Items]
Trust account per public share (in Dollars per share)			$ 10